| paraphernalia = His suit of cobalt armor gave him extra durability, speed and strength, but because it was nuclear generated he could only use it up to two hours at a time.

| paraphernalia = His suit of cobalt armor gave him extra durability, speed and strength, but because it was nuclear generated he could only use it up to two hours at a time.

| debut = Uncanny X-Men #31

| debut = Uncanny X-Men #31

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bio_text=

bio_text=

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Ralph Roberts built a suit of cobalt armor in hopes to imitate [[Iron Man (Anthony Stark)|Iron Man]]'s armor and called himself the Cobalt Man. His armor was made of a coblat alloy harder than diamond with a melting point of 1495 degrees Celsius. Roberts was exposed to radiation which gave him a greater size and superhuman strength. Roberts eventually was assumed to have died while trying to kill [[Egghead]].

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Ralph Roberts built a suit of cobalt armor in hopes to imitate [[Iron Man (Anthony Stark)|Iron Man]]'s armor and called himself the Cobalt Man. Roberts was exposed to radiation which gave him a greater size and superhuman strength. Roberts eventually was assumed to have died while trying to kill [[Egghead]].

He recently showed up alongside [[Nitro]] and fought the [[New Warriors]]. During the battle he was captured.

He recently showed up alongside [[Nitro]] and fought the [[New Warriors]]. During the battle he was captured.

Ralph Roberts built a suit of cobalt armor in hopes to imitate Iron Man's armor and called himself the Cobalt Man. Roberts was exposed to radiation which gave him a greater size and superhuman strength. Roberts eventually was assumed to have died while trying to kill Egghead.
He recently showed up alongside Nitro and fought the New Warriors. During the battle he was captured.